 | Home > Technical > Dodgy central locking and Alarm ECU probs. |
 
|
|
|
| bob neville Member Since: 30 Apr 2009 Location: Marbella Posts: 3247   
|
Can you give us a clue what the problem is ? Bob 2015 Jaguar XE240 R Sport - goes like ....... !! 2013 Defender 90 CSW - sold 2009 Defender 110 Double Cab - sold 2001 TD5 90 CSW - offroad project - sold to a forum member 2011 Porsche Boxster - for the sunny days ! |
||
26th Mar 2015 1:43pm |
|
| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018  
|
He's locked in the vehicle and lost the internet signal?
|
||
|
26th Mar 2015 10:07pm |
|
| taffrican Member Since: 14 Jan 2011 Location: Living room Posts: 622  
|
Nope, I deleted the original post, it was a little long winded and I think I may have sent a few readers to sleep
I am still struggling with the problem, car locks, unlocks itself, alarm goes off in the middle of the night, I have found cracked wiring in the door rubber conduit/grommet, can't get access to the 10AS ECU with nanocom or hawkeye....  what next? Optimists say the glass is half full..
Pessimists say the glass is half empty.. Engineers say the glass is twice the size it needs to be! |
||
|
27th Mar 2015 1:55am |
|
| Fifth Horseman Member Since: 08 Mar 2011 Location: Lanarkshire Posts: 322 
|
Fix the damaged wiring first and check the wiring to all the other doors.
Then check the alarm unit connectors for corrosion and the 10AS for signs of water damage. BBS has a guide for the 10 AS on their website which details the connectors, check the data comms cable for continuity between the 10AS and the ODB socket (pin 8 ) Last edited by Fifth Horseman on 27th Mar 2015 5:45pm. Edited 1 time in total |
||
|
27th Mar 2015 7:07am |
|
| bob neville Member Since: 30 Apr 2009 Location: Marbella Posts: 3247
|
Also check the door light switches, especially the front ones.
On the new 90 I have a problem with the door switches where water has got in. When it is cold the switches don't work properly and it causes the alarm to randomly go off. Bob 2015 Jaguar XE240 R Sport - goes like ....... !! 2013 Defender 90 CSW - sold 2009 Defender 110 Double Cab - sold 2001 TD5 90 CSW - offroad project - sold to a forum member 2011 Porsche Boxster - for the sunny days ! |
||
|
27th Mar 2015 10:22am |
|
| taffrican Member Since: 14 Jan 2011 Location: Living room Posts: 622
|
Thanks for the tips gents, Bob, your tip sounds VERY possible in my case, I have been having strange happenings with the door switches recently, I will be on the case next weekend, Mrs has me occupied on more pressing issues
 kitchen refurb. Optimists say the glass is half full..
Pessimists say the glass is half empty.. Engineers say the glass is twice the size it needs to be! |
||
|
29th Mar 2015 2:29am |
|
| Mjibex Member Since: 21 Mar 2013 Location: Reading Posts: 283 
|
I have the same issue - alarm goes off randomly for a day after jet washing! Mine is nsf door pin.
|
||
|
29th Mar 2015 2:08pm |
|
| Clive Member Since: 21 Mar 2014 Location: Littleborough Posts: 467 
|
Don't forget to check out the bonnet and rear door switches too
 |
||
|
29th Mar 2015 4:02pm |
|
| taffrican Member Since: 14 Jan 2011 Location: Living room Posts: 622
|
I have made a little progress in the alarm ecu fault, I found a screw that had cut into the alarm ecu harness, now I have access to the ecu with my nanocom (but whilst investigating the fault the back of my ignition fell off so now I have an even bigger job getting ignition out ) does in ever end Optimists say the glass is half full..
Pessimists say the glass is half empty.. Engineers say the glass is twice the size it needs to be! |
||
|
30th Mar 2015 10:51pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558 
|
"Does it ever end " no its just defender ownership
|
||
|
30th Mar 2015 10:54pm |
|
| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443 
|
I had a good one last week. I had some spare time to look at the central locking problem on my 2nd row passenger door. Sometimes it would unlock but rarely lock but there was definately an action to lock and unlock so the wires were fine. It soon became evident when I took the door panel off, just under the small fixed window glass there is a plastic drip tray and this had dropped down and was fouling the linkage. Took it out for now and all is fine, I'll get round to stripping the door down in the summer and reaffix it, maybe
 |
||
|
30th Mar 2015 11:35pm |
|
| taffrican Member Since: 14 Jan 2011 Location: Living room Posts: 622
|
Ok, time for an update, I drilled the ignition out and re-attached the electrical fitting on the back (by bending the 3 tabs which looked like they had never been bent in the 1st place) and checked/repaired the wires that were affected by the screw in the harness and causing my comms issues with pin 8 on the Nanocom....
So, looking into the alarm ECU I see a couple of events, but, not sure when these events took place so I have cleared these faults so I now have a starting point. I checked the status of the inputs and everything appears to be happening as it should apart from the drivers side sill switch (which I assume is the switch inside the lock actuator?) when I lock or unlock the door the state of this switch shows high whereas the passenger side sill switch goes from high to low (which seems correct to me) does anyone know whether the input state of the drivers sill switch is supposed to stay high all the time, common sense tells me it should go low when open and high when locked, but we are talking land rover here where common sense is usually thrown out the window at the beginning of the production line. Any definitive answers out there? please, BTW I replaced the drivers side sill switch about 12 months ago. Optimists say the glass is half full.. Pessimists say the glass is half empty.. Engineers say the glass is twice the size it needs to be! |
||
|
1st Apr 2015 10:24pm |
|
| Fifth Horseman Member Since: 08 Mar 2011 Location: Lanarkshire Posts: 322
|
Have you checked the connectors on the alarm unit yet?
The trigger event memory shows the last five events. If the connected inputs are showing as changing in relation to an input, then this should be ok - the Nanocom does have some quirks where there are some mislabeled inputs so your indications may be ok. I've just checked on my vehicle and the sill switch indications are the same as yours. There are only four sensor switch inputs to the 10as, drivers door pillar, drivers door lock, bonnet and finally all the other door pillar switches together. Only the drivers door has a sill switch - it would seem that two being shown on the Nanocom is an error and the one labeled on nanocom as the passenger door sill switch is the active one, it seems that the same 10AS input is used for RH and LH drive vehicles. |
||
|
2nd Apr 2015 9:42am |
|
| taffrican Member Since: 14 Jan 2011 Location: Living room Posts: 622
|
Thanks FH, yep I checked the connectors to the 10as ecu and all looks good apart from the damage to 2 of the wires caused by the screw entering the harness (god knows how that happend
) I have put everything back together and have been using the car for the past 2 days with no more "events", so, I say this with baited breath, it looks as though my troubles are over....  , but time will tell.
I find it a bit strange though that the sill switches indicated/labelled on the nanocom are wrong, are they aware of this @BBS? Thanks again to everyone who contributed to this post, greatly appreciated 
I will feedback of anymore weird happenings  Optimists say the glass is half full..
Pessimists say the glass is half empty.. Engineers say the glass is twice the size it needs to be! |
||
|
2nd Apr 2015 9:30pm |
|
|
|
| All times are GMT + 1 Hour |
< Previous Topic | Next Topic > |
Posting Rules
|
Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
